Rotary engine



Jan.

lei 19%. R. A. BRUNET 2,135,428

ROTARY ENGINE Filed Jan. 2a, 1938 I s Sheets-Sheet 1 In uentor Aiiorneys R. A. BRUNET 2,185,428

ROTARY ENGINE 7 Filed Jan. 28, 1 938 s Sheets-Sheet 2 tor Jan. W4U, R ABRUNET 2,185,428

ROTARY ENGINE Filed Jan. 28, 1938 3 Sheets-Sheet 3 Inventor i- Wane 4"f/4l0" graze? A iiomeys Patented Jan. 2, 1946 STATES PATENT OFFEQE 1Claim.

This invention appertains to new and useful improvements in engines andmore particularly to an engine or motor adapted to be operated bycompressed fluid.

The principal object of the present invention is to provide a fluidoperated engine wherein the parts are positive acting and. notsusceptible to the ready development of defects.

Another important object of the invention is to provide a compressedfluid operated engine, the rotation of which can be reversed quickly andefliciently.

Still another important object of the invention is to provide an engineof the character stated wherein the parts are of simple construction andassembled in an accessible and practical manner.

Other important objects and advantages of the invention will becomeapparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational view of the engine.

Figure 2 is a vertical sectional view through the engine taken on theline 2--2 of Figure 1.

Figure 3 is a side elevational view of the engine with one side wallremoved and the pipes on the approach side in section.

Figure 4 is a fragmentary detailed sectional view taken on the line 4-4of Figure 2.

Figure 5 is an inside elevational view of one side wall of the stator.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that the stator is generally referred to by numeral 5 andthe rotor by numeral t. The stator consists of the cylindrical wallstructure l and the two end wall structures 8--9, one of which ispreferably removable to permit access to the interior of the stator.

At the proper intervals around the circumference of the cylinder "i areoutstanding cases it in each of which is the slidable abutment lloperating between anti-friction rollers l2. A spring It in each of thecases it serves to urge the corresponding abutment ii toward the rotor8, so that it will ride against the periphery of the rotor and into thepocket it. The ends of the pocket are sloped as at it to facilitateentrance and exit of the abutment with respect to the pocket.

Each side of the engine is provided with a supply pipe and an exhaustpipe. On one side of the engine is the compressed fluid supply pipe l6which is of annular formation as is the corresponding exhaust pipe ll.On the other side of the engine is the supply pipe i8 and the exhaustpipe l9. Extending to the pipe i6 is the supply pipe 58 and from thepipe ll extends the pipe 19' and in these pipes are the valves 2t2i,respectively, connected by the link 22 and operated by the handle 23.

From the pipes l8i9 extend the pipes 24-25 in which are the valves 262iconnected by the link 28 and operated by the handle 29 in unison.

As is shown in Figure 3, the pipe I6 is provided with branch extensions3b which extend into the stator l and deliver compressed fluid into thepocket on the left sides of the abutments H. The rotor t is providedwith ports it, one for each of the pockets i4 and with these pockets areregisterable the grooves 32 in the side wall 9 from which groovewaysextend the branch pipes 33 to the exhaust pipe ll. Thus it can be seen,that while compressed fluid is being supplied to the left side of thetop abutment in Figure 3 so that the rotor 6 is being moved in thedirection of the arrow, fluid in the pocket at the right side of theabutment H is escaping by way of the adjacent port 3!, groove 32 andpipe ll.

When a reverse rotation of the engine is desired, compressed fluid issupplied from the pipe 18 by way of the branch pipes 3 3, which resultin movement of the rotor in the opposite direction while air behind theabutment is escaping by way of the ports 35 and stator grooves 36 to thepipe 19. This reversing operation is obtained by closing the first setof valves shown in Figure l and opening the second set, thus changingthe delivery of compressed fluid from one side of the abutment to theopposite side.

Numeral 3! denotes the drive shaft which is equipped with the gear 33while interposed between the gear and the ring gear 39 on the inside ofthe rotor ii are the planetary gears til.

As can be seen in Figures 4 and 5, the inner sides of the walls 9-10 areprovided each with an annular arrangement of pockets 5!] with which theducts 5i extending downwardly and laterally from the pockets l5register. Thus the fluid pressure can be supplementarily used to afforda turbine effect between the rotor and stator.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

in a given direction, said rotor having curved passages therein, one foreach pocket, each passage having one end in communication with the rearend of a pocket and its other end opening out through a side part of therotor and the adjacent side of the stator having a plurality of groovestherein for communicating with the passages duringa portion of therotary movement of the rotor and exhaust means connected with saidgrooves.

RENE ARTHUR BRUNET.

